Tip for gas-burning apparatus



June 10, 1930. J, EK FT AL 1,762,166

' I TIP FOR GAS BURNING APPARATUS Filed July 28, 1924 2 sheets-sheet 1 I?! /r v #22 /NVE//TOR fiJ/wse/f J /ZMSe/f I BY @4( p b I A TTOR/YEYS June 10, 1930. J, us ET AL 1,762,166,

TIP FOR GAS BURNING APPARATUS Filed July 28, 1924 2 Sheets-Sheet 2 A r ran/15 vs Patented June 10, 1930 UNITED STATES PATENT OFFICE ARTHUR JZIAUSEK AND IRWING F. FAUSEK, OF ST. LOUIS, MISSOURI TIP FOR GAS-BURNING APPARATUS Application filed July 28,

5 larly to' a tip for such apparatus.

designed more especially for burning oxygen and acetylene under pressure and is commonly known as an oxyacetylene torch or. blowpipe. In the most common form of the apparatus suggested above oxygen and acetylene are directed through a common passageway or through separate passageway-s to a tip at the-discharge endaof which these gases burn, producing a flame of very high tern erature. Prior to this invention most of t e oxygen necessary to support combustion of the combustible passed through the torch or blowpipe from a container, and it is of course apparent that the provision of this container of oxygenadded to the expense of operating the apparatus. The flame which issues from the tip of an oxyacetylene torch or blowpipe is coneshaped and of considerable diameter, and it is therefore impossible for very much oxygen which is in the atmosphere to penetrate the flame so as to supply some of the oxygen which a flame requires to be sustained.

The purpose of the present invention is to provide a tip for oxyacetylene torches or blowpipes which has an orifice of such shape that much greater area of the flame is exposed to the atmosphere and a much thinner flame is produced, whereby instead of most of the oxygen being supplied from an artificial source a large portion of said oxygen is collected from the atmosphere which surrounds the flame. This arrangement results in a great saving in the cost of operating the apparatus, for the reason that the amount of oxygen drawn through said apparatus from the container associated therewith is 5 greatly reduced.

' With the ,foregoing and other objects in view, the invention comprises the novel construction, combination and arrangement of parts hereinafter more specifically described and illustrated in the accompanying draw- The apparatus with which the'improved I tip disclosed herein is intended for use is 1924. Serial N0. 728,571.

ings, wherein is shown the preferred em bodiment of the invention. However, it is to be understood that the invention com rehends changes, variations and modifications which come within the scope of the claims. an hereunto appended.

Fig. I is'a section of our im roved tip associated with a fragment of t e head of the oxyacetylene torch. v

Fig. II is an-end elevation of the tip 80 shown in Fig,v I.

Fig.III is a cross section on line III'III of Fig. I.

Fig. IV is a section of the form of tip. used with an apparatus wherein the oxygen and acetylene are caused to flow through separate passageways.

Fig. V is an end elevation of the tip shown in Fig. IV.

Fig. V1 isa cross section onthe line VIVI of Fig. IV.

Figs. VII, VIII, and IX illustrate tips provided with orifices of various shapes.

In the drawing, A designates the discharge head of an oxyacetylene torch or blowpipe, which head is provided with a passageway B terminating in an enlarged internally threaded portion C. 1 designates our improved tip which is provided with a passageway 2 formed therethrough, which passageway is in communication with the passage- -way B, said tip also being provided with a reduced externally threaded portion 3 adapted to be screwed into the internally threaded portion C whereby said tip is secured to the head A. The tip ,1 is provided with a non-circular portion 4 whereby it may be rotated to screw said tip into the head A, and said tip is also provided with a seat 5 adapted to contact closely with a seat 6 formed on the head A whereby fluid-tight contact is obtained between said head and said tip.

By referring to Fig.1 of the drawings, it will be noted that the passageway 2 is of approximately the same diameter from the inner end of the" tip 1 to a'point which is slightly removed inwardly from the outer end of said tip, which point is designated by the reference character X in Fig. I. The

cross sectional shape of that portion of'the passageway ust referred to is circular, as

shown in 1g. III. However, from the point-X to the outer end of the tip 1 the p asthe passageway the form of a body circular 1n cross section. When, however, said combustibles reach the. point X and pass through the portion 2" of said passageway, Y

the cross sectional shape of said body of combustibles will be causedvto conformto the shape of the passageway 2', which in Fig. I is cross-shaped- This will cause a stream 99 of combustibles which is cross-shaped in cross section to flow from the discharge end of the tip 1, and because of theshape of said stream of combustibles it is quite apparent that when said stream of combustlbles is burning much greater area of the flame is exposed to the atmosphere through which said flame passes than if said stream of combustibles were circular in cross section.

- Because of this much more oxygenwill be lected heretofore by the circular flames.

collected from the atmosphere than was cciln addition to the fact that greater area of flame is exposed to the atmosphere it will be apparent that the flame will be so shaped that there will be no thick portions thereof, and as a result the oxygen in the atmosphere may penetrate the flame and thus produce a complete and proper mixture of oxygen and acetylene to obtain a flame of the desired temperature.

In Fig. IV a tip is illustrated which is intended for use with a torchor blowpipe having separate passageways for the oxygen and mixed gases. In the view referred to, A designates the head of the torch or blowpipe, which is provided 'with .an oxygen conduit D and a mixed gas conduit E. 1

; designates a tip which is fixed to the head 'A' by means of a coupling member 7. The

tip 1 includes an oxygen conductor 8 having a passageway 9 communicating with the conduit D inthe head A, said conductor being extended from said head A to the outer end of the tip 1'. The tip 1' is of considerably larger diameter than the conductor 8,

so that an annular space 10 is rovided' around the conductor 8. The annu ar space 10 communicates through the medium of a plurality of openings 11 with a second annularspace 12, which space 12 in turn communicates with the mixed gas conduit E in the head A. The annular passageway 10 is provided at its outer end with a portion 10, which is cross shaped in cross section,

said portion 10" being similar in shape to the portion? of the tip illustrated in Fig. I.

- n the operation of the apparatus shown in Fig. IV, some oxygen. flowsthrough the conduit D and through the opening 9 in the conductor 8 to the discharge end of the tip 1 as required- Also, mixed gases flow through the conduit E, through the annular space 12 and openings 11 to the annular space 10. The 'mixed gases then pass t rough the portion 10 of the annular space 10, and because of the shape of said portion 10 a stream of mixed gases is caused to issue from the tip, which is crossshaped in cross section. It is, of course, a parent that the same advanta es will resu t from the use of a flame cross-s aped in cross section in connection with the tip shown in Fig. IV as will result from a flame of that shape in connection'with the tip shown in Fig. I. Y V In connection with the structures shown in Figs. 1' and IV we have stated that the tips are provided with cross-shaped orifices, but it is plain that orifices of other shapes may be used. In Figs. VIjII,-IX and X we have illustrated some of the orifices which may be used and which will have all of the advantages that the cross shaped orifice has. It will be noted that the discharge por- IV are tapering, and the purpose of this is to produce a cone-shaped flame.

Another advantage of our improved tip over the ordinary tip provided with a round orifice results from the fact that a flame issuing from our tip will not have such force as to prevent the metal being treated from flowing to the heated area, as will the flame issuing from a round orifice.

We claim: a a

1. A welding tip for a gas-burning, apparatus comprising a tubular member provided with a, passageway formed therethrough from end to end thereof,vsaid passageway at the discharge end of said member being provided with inwardly extended, circumferentially spaced radial extensions formed in the wall of said member and extended approximately parallel with the major axis thereof, which give to said passage.- way at said discharge end of said member a shape non-circular in cross-section each portion of which communicates with all other portions thereof.

2. A welding tip for a gas-burning apparatus comprising a tubular member orovided with a passageway formed therethrough tially spaced radial extensions formed in the circumferential wall of the member and 95 tions of the tips illustrated in Figs. I and i extended approximately parallel with the major axis thereo f, wh1ch give to said passageway at said discharge end of said memher a shape non-circular in cross-section each portion ofwhich communicates with all other portions thereof.

3. A tip for agas-burning apparatus comprising a tubular member provided with a passageway formed therethrough from end to end thereof, said passageway at the discharge end of said member being provided with inwardly extended, circumferentially spaced radial extensions formed in the wall of said member and extended approximately parallel with the major axis thereof, which give to said passageway at 'said discharge 7 

